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Parallel and Series Circuits

Parallel and Series Circuits. Introduction. The purpose of using electricity is to transfer electrical energy into another form of energy to produce work. Main Menu. Vocabulary Components Parallel Circuits Series Circuits Practice Quiz. Vocabulary.

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Parallel and Series Circuits

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  1. Parallel and Series Circuits

  2. Introduction The purpose of using electricity is to transfer electrical energy into another form of energy to produce work.

  3. Main Menu • Vocabulary • Components • Parallel Circuits • Series Circuits • Practice Quiz

  4. Vocabulary • Electricity- the flow of electrons • Electronics- the flow of charge through various materials and devices

  5. Vocabulary • Voltage- the difference between two points of an electrical or electronic circuit. • Unit- Volts (V) • Current- the flow (movement) of electric charge. • Units- Ampere (A)

  6. Vocabulary • Resistance- the measure of the degree to which an object opposes an electric current through it. • Unit- Ohm (Ω) • Capacitance- measure if electric charge stored for a given electric potential. • Unit- Ferad (F)

  7. Vocabulary Ohm’s Law V=IR V-Voltage I- Current R- Resistance

  8. Components Component Menu Resistor Inductor Capacitor EMF

  9. Resistor R

  10. Resistor Component Menu

  11. Inductor L Component Menu

  12. Capacitor C Component Menu

  13. EMF Voltage Source V Component Menu

  14. Parallel Circuits • When two or more components are connected in a parallel circuit, they share the same voltage across their ends.

  15. Parallel Circuits Resistors • Take the reciprocal of the individuals resistors reciprocals added together. Rtotal= (1/R1+1/R2+…+1/Rn) -1

  16. Parallel CircuitsExample Resistors R1 R2 R3 R1=22kΩ R2=1kΩ R3=33kΩ Find Rtotal -1 Rtotal=(1/R1+1R2+1/R3)

  17. Parallel Circuits Example Resistors R1 R2 R3 R1=22kΩ R2=1kΩ R3=33kΩ Find Rtotal -1 Rtotal=(1/R1+1R2+1/R3) -1 Rtotal=(1/22kΩ+1/1kΩ+1/33kΩ)

  18. Parallel Circuits Example Resistors R1 R2 R3 R1=22kΩ R2=1kΩ R3=33kΩ Find Rtotal -1 Rtotal=(1/R1+1R2+1/R3) -1 Rtotal=(1/22kΩ+1/1kΩ+1/33kΩ) =929.58Ω

  19. Parallel Circuits Practice Resistors R1 R2 R3 R1=1kΩ R2=100Ω R3=22kΩ Find Rtotal -1 Rtotal=(1/R1+1R2+1/R3)

  20. Parallel Circuits Practice Resistors R1 R2 R3 R1=1kΩ R2=100Ω R3=22kΩ Find Rtotal -1 Rtotal=(1/R1+1R2+1/R3) -1 Rtotal=(1/1kΩ+1/100Ω+1/22kΩ)

  21. Parallel Circuits Practice Resistors R1 R2 R3 R1=1kΩ R2=100Ω R3=22kΩ Find Rtotal -1 Rtotal=(1/R1+1R2+1/R3) -1 Rtotal=(1/1kΩ+1/100Ω+1/22kΩ) =90.53Ω

  22. Parallel Circuits Example Resistors and Ohm’s Law R1 R2 Find Current (I) R1=1kΩ R2=33kΩ -1 Rtotal=(1/R1+1R2) -1 Rtotal=(1/1kΩ+1/33kΩ) =13.2kΩ

  23. Parallel Circuits Example Resistors and Ohm’s Law Rtotal=13.2kΩ V=IR or I=V/R

  24. Parallel Circuits Example Resistors and Ohm’s Law Rtotal=13.2kΩ V=IR or I=V/R I=12V/13.2kΩ I=0.909mA

  25. Parallel Circuits Capacitors • Add individual capacitance Ctotal=C1+C2+…+Cn

  26. Parallel Circuits Example Capacitors C2 C1 C1=10μF C2=20μF Find Ctotal Ctotal=C1+C2

  27. Parallel Circuits Example Capacitors C2 C1 C1=10μF C2=20μF Find Ctotal Ctotal=C1+C2 Ctotal=10μF+20μF=30μF

  28. Parallel Circuits Practice Capacitors C2 C1 C1=20μF C2=30μF Find Ctotal Ctotal=C1+C2

  29. Parallel Circuits Practice Capacitors C2 C1 C1=20μF C2=30μF Find Ctotal Ctotal=C1+C2 Ctotal=20μF+30μF

  30. Parallel Circuits Practice Capacitors C2 C1 C1=20μF C2=30μF Find Ctotal Ctotal=C1+C2 Ctotal=20μF+30μF=50μF

  31. Series Circuits • Components are connected so that the current has to flow through all components.

  32. Series Circuits Resistors • Add individual resistors • Rtotal=R1+R2+…+Rn

  33. Series Circuits Example Resistors Find Rtotal R1 R1=1kΩ R2=22kΩ R3=33kΩ R2 R3 Rtotal=R1+R2+R3

  34. Series Circuits Example Resistors Find Rtotal R1 R1=1kΩ R2=22kΩ R3=33kΩ R2 R3 Rtotal=R1+R2+R3 Rtotal=1kΩ+22kΩ+33kΩ=56kΩ

  35. Series Circuits Practice Resistors Find Rtotal R1 R1=1kΩ R2=200Ω R3=33kΩ R2 R3 Rtotal=R1+R2+R3

  36. Series Circuits Practice Resistors Find Rtotal R1 R1=1kΩ R2=200Ω R3=33kΩ R2 R3 Rtotal=R1+R2+R3 Rtotal=1kΩ+200Ω+33kΩ

  37. Series Circuits Practice Resistors Find Rtotal R1 R1=1kΩ R2=200Ω R3=33kΩ R2 R3 Rtotal=R1+R2+R3 Rtotal=1kΩ+200Ω+33kΩ=34.2kΩ

  38. Series Circuits Example Resistors and Ohm’s Law R1=1kΩ R2=22kΩ R3=33kΩ R1 R2 R3 Find Current (I)

  39. Series Circuits Example Resistors and Ohm’s Law Rtotal= R1+R2+R3 Rtotal=1kΩ+22kΩ+33kΩ=56kΩ V=IR or I=V/R I=12V/56kΩ I=0.214mA

  40. Series Circuits Capacitors • Add individual reciprocals and divide by the reciprocal Ctotal=(1/C1+1/C2+…+1/Cn) -1

  41. Series Circuits Example Capacitors Find Ctotal C1 C1=10μF C2=20μF C3=30μF C2 C3 -1 Ctotal=(1/C1+1/C2+1/C3)

  42. Series Circuits Example Capacitors Find Ctotal C1 C1=10μF C2=20μF C3=30μF C2 C3 -1 Ctotal=(1/C1+1/C2+1/C3) Ctotal=(1/10μF+1/20μF+1/30μF) =5.45μF -1

  43. Series Circuits Practice Capacitors C1 Find Ctotal C1=10μF C2=20μF C2 -1 Ctotal=(1/C1+1/C2)

  44. Series Circuits Practice Capacitors C1 Find Ctotal C1=10μF C2=20μF C2 -1 Ctotal=(1/10μF+1/20μF) Ctotal=(1/C1+1/C2) -1

  45. Series Circuits Practice Capacitors C1 Find Ctotal C1=10μF C2=20μF C2 -1 Ctotal=(1/C1+1/C2+1/C3) Ctotal=(1/10μF+1/20μF) =6.67μF -1

  46. Practice Quiz

  47. Practice Quiz 1. Which one is a basic electric circuit type? • Square • Series • Round • All of the above

  48. Practice Quiz Correct! Go to Question 2

  49. Practice Quiz Incorrect! Review Circuits

  50. Circuits • There are two types of circuits. They are: • Parallel Circuit • Series Circuit Go Back to Question

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